Skip to content / Đến nội dung
ThichHocToan.com

HKIMO 2026 Grade 7 National Preliminary Set 01 Question 7

HKIMO · HKIMO 2026 Grade 7 National Preliminary Set 01

Question 7

Given $A:B=1:3$, $B:C=6:5$ and $A+B-C=9$, find $B$.
  1. 6
  2. 9
  3. 15
  4. 18